US2015342895A1PendingUtilityA1

Hydroxyalkyl cellulose

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Assignee: NIPPON SODA COPriority: Dec 3, 2010Filed: Jun 24, 2015Published: Dec 3, 2015
Est. expiryDec 3, 2030(~4.3 yrs left)· nominal 20-yr term from priority
Inventors:Satoru AbeTakashi Kato
A61K 9/1652A61K 9/5078C09D 101/284A61K 9/2866C08B 11/08C08B 11/20A61K 9/20C08L 1/284A61K 47/38A61K 9/1676A61K 9/5047A61K 9/2054
52
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Claims

Abstract

The present invention provides a hydroxyalkyl cellulose having a viscosity of 1.10 mPa·s to 1.95 mPa·s in a 2%-concentration aqueous solution at 20° C., and a solid formulation containing the hydroxyalkyl cellulose.

Claims

exact text as granted — not AI-modified
1 - 4 . (canceled) 
     
     
         5 . Coated particles comprising:
 core particles; and   a coating layer that covers the core particles, wherein   the coating layer contains a hydroxyalkyl cellulose that has a viscosity of 1.10 mPa·s to 1.95 mPa·s in a 2%-concentration aqueous solution at 20° C.   
     
     
         6 . The coated particles according to  claim 5 , wherein
 a volume average primary particle size of the core particles 5 μm to 1000 μm.   
     
     
         7 . The coated particles according to  claim 5 , wherein
 the content of the hydroxyalkyl cellulose in the coating layer is 1% by weight to 50% by weight.   
     
     
         8 . The coated particles according to  claim 5 , wherein
 the coating layer further contains drug particles.   
     
     
         9 . The coated particles according to  claim 8 , wherein
 a volume average primary particle size of the drug particles is smaller than a volume average primary particle size of the core particles.

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